540143511 has 32 divisors (see below), whose sum is σ = 756518400. Its totient is φ = 342486144.

The previous prime is 540143497. The next prime is 540143519. The reversal of 540143511 is 115341045.

It is a happy number.

It is not a de Polignac number, because 540143511 - 2⁵ = 540143479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540143519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1360365 + ... + 1360761.

It is an arithmetic number, because the mean of its divisors is an integer number (23641200).

Almost surely, 2^540143511 is an apocalyptic number.

540143511 is a deficient number, since it is larger than the sum of its proper divisors (216374889).

540143511 is a wasteful number, since it uses less digits than its factorization.

540143511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 540143511 is about 23240.9877371854. The cubic root of 540143511 is about 814.3974172530.

Adding to 540143511 its reverse (115341045), we get a palindrome (655484556).

The spelling of 540143511 in words is "five hundred forty million, one hundred forty-three thousand, five hundred eleven".